Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: An access floor panel is disclosed that has a top plate with a plurality of non-directional air passageways intermingled with a plurality of directional air passageways. The directional air passageways are configured to direct airflow through them at an angle to the upper surface of the top plate of other than 90°. The directional air passageways include an opening in the top plate and a tab adjacent to each opening that is at an angle with respect to top surface of the top plate of other than 90°. Due to the intermingling of the non-directional air passageways and the directional air passageways, the composite air flow direction through the non-directional air passageways and the directional air passageways is at an angle with the top plate of other than 90°.

Abstract: An air seal device having a housing with a passageway, a core body that is configured to fit tightly within the passageway to restrict air flow through the passageway and to seal the interface between the core body and the housing, and a top ring that locks to the housing and engages and compresses the core body within the housing. The core body has a slit extending vertically therethrough that allows an elongated member or members to pass through the core body while providing an airtight interface between the member or members and the slit of the core body.